Water-sealed vacuum and pressure trap



A. HARRISON; j WATER SEALED VACUUM AND PRUESSURE TRAP.

' A APPLICATIQN'FILED1uNE 21, 1920. 1242538557o y v@PatentedAug.15,1922.

ss es.

'Aivios HARRISON, or CI-IICAGO, ILLINOIS, AssIeNoiivIo JAs: r. MAnsiIaCOMPANY, on

CHICAGO, ILLINOIS, A ConroaiirIoN or ILLINOIS. y .4 1'

WATER-SEALED VACUUM AND PRESSURE TRAP.` I

Specification of Letters Patent. rPatnijd Allg'. 15,` '1922.

To all whom t may concern.'

Be it known that I, Anios HARRISON, a citizen of the United States,residing at Chicago, in the county of Cook and State of Illinois, haveinvented certain new and luseful Improvements in Tater-Sealed Vacuum andPressure Traps, of which the following is adescription.

My invention belongs to that general class of devices known as traps,and relates particularly to an improved trap for use on steam systems,the same being suitable for use on either pressure or vacuum systems.The in vention has among its objects the production of a device of thekind described that is simple, convenient, durable, reliable, eiiicientand satisfactory for use wherever found applicable. Ithas particularlyas anv object the production of a device of the kind described that willprevent the escape or waste of steam under any and all conditions whencfperating as a vacuumor prcssure'trap. `Many other objects andadvantages of the construction herein shown and described will beObvious to those skilled in the art from the disclosure herein made.

To this end my invention consists in the `novel construction,arrangement, and com bination of parts herein shown and de-l scribed,and more particularly pointed out in the claims.

In the drawings, wherein like reference characters indicate like orcorresponding parts,

Figure 1 is a sectional view through one form of my device; and

Figure 2 is a cross sectional view taken substantially on line 2.-'-2 ofFigure 1.

Yeie'rring to the drawings, 1 represents a casing of suitable size,shape andniaterial, which in the construction shown is provided with aremovable top or closure f2, which may be normally secured in place bybolts 3, or theirequivalents for the purpose.v In the constructionshown, I prefer to provide aj gasket or packing 4: between the closureand casing. As shown, Il also' preferably form the casing and closure sothat the closure is partially set in at the top` so that it is alwaysaccurately centered and a tight joint secured. 'Ihe casing is providedwith one or' more inlets, 5 and 5 being shown, and with one or moreoutlets, all but one, however,

-beingpreferably vclosed when the `is installed. In the` constructionshown, there is provided an outlet 6 in the top 'orv closure and anOutlet 6 4in the bot-tom,` so that the In the trap desired outlet maybeused. illustrated, the 4.same isv arranged with the open Outlet at thetop, and the inlet 5 closed; I have shown the casingprovided with a wallor baille '7 'spaced from tlieoute'r wall of the vcasing so as toprovide a chamber 8, which. is sho-wn provided with ports 9and i 10.Ordinarily one or the other of the ports. as desired, (as shown port 10)is closed. `The additional inlet 5 referred to is preferably arrangedadjacent the top of thecasing d in the drawingsI have shown the/inlet 5j closed by a plug 38, it being understood that when this inlet is lopenVor used, the inlet 5 is 'preferably plugged up.

Arranged within'the casing'is a iioat of d suitable size, shape andmaterial, which "I have mountedv on', atubularfbody orI vstein ltwhichforms astenrfor the float, and alsocooperating with the seat 15, oritsequivalent, on the casing, serves as a valve. The

valve'seat 15 maybey formed as part ofthe casing, or as shown',may be aseparable seat which may be renewed andwhich may be `of any material.suitable for vthe purpose. In the construction illustrated, I vhave'provided a depending part 16,v which may be formed integral with thevtop or separableftherewitlji,. as shown, thesaine having a dependingpo'rtion 17 of a size to receive the stem rIher'e j is also vprovidred'aport 18, or theequival'ent, in the same. Partl also carriesadependingpart 19 which is tubularvand Ais vof-'a size move thereinto when thefloat is raised, the

part 1T being preferably internally threaded, however, as indicated atl22 thus allowii'ig the waterto come between thesteinilll and the part 17and forin 'substantially a water' l v to project down into theystem ortubularv packing or seal without permitting alarg'e i,

amount of lateral play between said parts. n The float is constructedwith its ltop 23 depressed so as to Jiorm a receptacle in the top torwater or other i'luid 24, which iforms a seal'r about the lower end otthe portion 1T and between the valve or stem 14. l also prefer to iormthe bottom of the float, as

shown, so as to provide an air space which forms substantially an aircushion, causing the float to rise and tall easily and 'prevent noise aswell as injury to the seat or disk of the valve. A pipe 25, or itsequivalent, preterably extends 'from the port 9 communicating with thechamber 8, and is arranged to discharge all iluid or water onto thefloat so as to maintain the water seal thereon. l-lowever, if desired,the closure may be arovided with a duct as indicated in the dotted linesat 26' tor the 'saine purpose.

1n order to control the port 18, I provide what may be termed athermostatic valve 2'?, which, as shown, is mounted on the thermostaticmember 28, which may be secured by a screw 29 or the equivalent to thedependingl portion 17. I have an inlet pipe 82 extending to the casing,it being understood, as previously mentioned, that the plug 33 may beremoved and a pipe extended to the port 5, pipe 32 in this case beingremoved and a plug arranged at the port 5. fis before mentioned, port 1Gis shown closed by a plug 11, it being understood that the plug may beemployed or not, as desired. l have also shown the discharge or returnpipe 3a connected to the outlet 6, outlet 6 being closed by a plug orthe equivalent. 1f desired, a pet-cock 36 or its equivalent may beprovided and the casing may also be provided with a drain opening, whichl have shown closed withl a plug 87.

T he operation oi' the device may be briefly described, assuming thatthe same is connected up as shown and described, as tollows: Normallythere is water in the casing sealing the lower end of the valve 11i, andwater on the float sealing the lower end of the depending part 17. Airinthe system lmay escape through the port 18, but any steam admitted tothe trap will affect the thermostatic valve, and valve member 27 willbemoved to close the port 18. `When the water of condensation reaches alevel suiiicient to cause theiioat to rise, the water of condensation iscarried up through and out the outlet (l, being carried oli by pipe ifthe outlet 6 is used, outlet 6 being plugged, the same passes downwardlythrough the port G. All watero'i condensation entering 'the casing whenplug 11 is in place is discharged on the float and may overflow into`the casing, the same maintaining the seal previously described. Thepartition 7 prevents the sudden entrance of the water of condensationand consequent disturbing ot the working parts. ln some cases it isfound desirable to use both the ports 9 and 10, and in some cases it isalso steam when in operation.

found desirable to use port 5 in preference to port 5. lt will be notedthat the free escape ot steam is at all times prevented, eX- cept whenthe valveis opened, when possibly some small amount may pass up with thewater of condensation, but immediately the valve returns to its closedposition, the escape of steam is prevented. rilhe device is continuallysealed against the leakage ci' lt will be noted that in case thedischarge takes place at the bottom or" the casing, the escape of airthrough the tubular valve is the same as where the discharge is at thetop.

Having thus described my inventiomit is obvious that various immaterialmodifications may be made in the same without departing from the spiritot my invention; hence 1 do not wish to be understoodas limiting myselt'to the exact form, construction, arrangementand combination of partsherein shown and described, or uses mentioned.

W hat l claim acl new and desire to secure by Letters Patent is:

1. ln a device of the kind described and in combination, a casingprovided with an inlet and having a plurality ci outlets, means fornormally closing one of said outlets, a tubular valve arranged tocontrol either outlet, a float mounted on said valve for controllingsaid valve, and means for discharging water about the valve above thefloat to maintain a water seal thereat.

2. ln a device of the kind described and in combination, a casingprovided with an inlet and having a plurality of vertically alignedoutlets, means 'for normally closing one of said outlets, a tubularvalve arranged to control either outlet, and a iioat tor controllingsaid'valve.

3. in a device ci the kind described and in combination, casing providedwith an inlet and having a plurality oit outlets, means for normallyclosing one oi' said outlets, a

tubular valve arranged to control either outlet, a float for controllingsaid valve, and means for maintaining a water seal at the top ot thefloat. I

t. ln a device oi the kind described and in combination, acasing'provided with an inlet and with an outlet, and having an air portcommunicating with said outlet, thermostatic means 'for preventingthelescape of steam through said air port, a valve for controlling thedischarge of fluid through said outlet, a float mounted on said valve,and means for providing a water seal at the top of the float andpreventing the escape oi vapor 'through the outlet port from the casingwhen the valve is in its closed position 5. in a device of the kinddescribed and in combination, a casing provided with a plurality ofinlet ports and with a plurality ci' outlet ports, means for normallyclosing rasees# one inlet port and meansV Yfor normally closing oneoutlet port, a valve for controlling the discharge otfluid through theopen out-y let, a float connected with said valve, and means forproviding a water' seal `and preventing the escape, of vapor from thecasing when the valve is in its closed position.

6. ln a device of the kind described and in combination, a casingprovided with an inlet and having a plurality of outlets arranged oneadjacent the top and one adjacent the bottom of the casing, means fornormally closing one of said outlets, means for controlling eitheroutlet comprising a tubular valve arranged between the outlets, and afloat mounted on the valve for controlling said valve, said casinghaving a tubular sleeve depending from the top and surrounding the upperend of the valve, said sleeve having a port, a thermostatic valve forpreventing the leakage through said port, said float formed with adepression in its top about the valvev andsleeve, casing constructed todischarge water into said depression whereby a water seal is formed atthe lower end of the' sleeve between the sleeve and valve. n

7. ln a device. of the kinddescribed and in combination, a casingprovided with an inlet and with an outlet at the top and an outlet portat the bottom, means 'for riorprojecting into the sleeve, a iioatmountedv on said valve and provided with a depresw mally closing oneoutlet port, a sleeve depending from the topdatv said outlet port, atubular valve arranged between said outlets and projecting into saidsleeve, the second sleeve depending `from said iirst mentioned sleeve tothe interior oi; said valve, and a float member mounted on said valveand having a depression in' its top, said iirst sleeve extending intosaid depression, means tor discharging water entering the casing intosaid depression, said sleeve constructed with an air leakage port, andmeans for automatically preventing the-.escape of vapor through saidleakage port.

8. In a device of the kind described and in combination, a casingprovided with a plurality of inlets and having a battle arranged at saidinlets, said casing provided with an outlet port, a tubular valvearranged to control the passage voi fluid through said outlet port, saidvcasing having a valve seat arranged to cooperate with said valve, asleeve carried by the casing adjacent the upper end of said valve, saidvalve sion in its top, said sleeve being oi' a length to project intosaid depression, and means for discharging water oic condensation ontothe float whereby a seal is formed between the sleeve and valve toprevent the escape oi vapor therebetween.

9. ln a device of the kind described and in combination, a casingprovided with an and said i outlet in its top andvvith a'vz'ilvel seatat the bottom below said i outlet s'portl a tubular valve arranged tocooperate atits lower end with said valve seat, a tubular sleevedepending into said valve stem to substann an outlet and provided withdepending sleeves arranged one Within the other with a spacetherebetween, a tubular valve arranged on the inner sleeve with itsupper end extended into the space between the sleeves and` movabletherein, a float arranged on said valve constructed with depressions atthe top andy bottom thereof, said outer vsleeve being oi a length toproject into the depressionat the top of the float, said sleevesprovided withv ports arranged to permit the admission of air from theinterior of the casing to the interior of the inner sleeve,

and means 1"'or automatically preventing the` admission of lsteam tosaid inner 'sleeve through said port, and means for discharging water ofcondensation into thev upper depression of the ioat whereby'a watersealis Aformed betweenthe outer sleeve and the valve and the escape of steamthereatprev vented. v

` ll. lny a device of the kindy described and incombination, a casing'having aninletv and an outletv and provided with depending sleevesarranged one within the. other with a spa-ce therebetween, a tubular.valve arranged onA the inner'sleeve with its upper end `extended intothe space between thev sleeves and movable therein, said outer sleevebeinginternally grooved and coop? erating with said valve to `iorm fluidbalilesv therebetween, a valve seat disposed below l the lower end ofthe jvalve and arranged to cooperate therewith, a iioat arranged onsaidvalve. constructedl with depressions at thel top and bottom thereoi'saidouter sleeve be` ing of alength ,tol project into the depression at thetopofv the loat, said sleeves provided with. ports arranged topermit thead-k mission oi' air from the interior of the casing to the interior ofthe inner sleeve, and

means for automatically preventing the 'admission of steam to said innersleeve through said port, and means for discharging water ofcondensation into the upper depression of the float whereby a water sealis formed between the outer sleeve and the valve and i if the escape oitsteam thereat prevented.

l2. In a device of the kind described and in combination, a casingprovided with ran` inlet and with an outlet and` a port communicatingwith said outlet, a valve for con-y trolling the discharge of uidthrough said' outlet, a float connected with said Valve, signed my namein the presence of two submeans for provldlng a Water seal and pre-Scrlbmg Wltnesses. AVentmg the escape of vapor from the oasing, when theValve is in its Closed position, AMOS HARRISON' 5 and 'hermostatc meansfor automatlcally Wltnesses:

cohtl'olng leakage though said port. ROY WV. HILL )fn 'testimonyWhelceo7 have hereunto BERTHA HARTMANN.

